Number Systems

Question 1

Natural Numbers and symbol

Answer 1

Set of no.s containing all +ve whole numbers AND zero
symbol is N

Question 2

Integer Numbers and symbol

Answer 2

set of whole numbers both +ve and -ve
symbol is Z

Question 3

Rational Numbers and symbol

Answer 3

whole numbers both positive and negative (include 0)
can be written exactly as a fraction
Q

Question 4

Irrational

Answer 4

cannot be written exactly as a fraction

Question 5

Real Numbers

Answer 5

all possible real world quantities
includes irrational, rational integer and natural numbers
symbol is R

Question 6

Ordinal Number

Answer 6

integers used to describe the position of objects